#include <iostream>

using namespace std;

const int N = 2e9;
int a[N] ;
int f(int n){
    int res = 0;
    int k = 5;
    for(int i = 1; i <10; i ++){
        res +=  n/k;
        k *= 5;

    }
    return res;
}

int main(){
    int k ;
    cin >> k;
    

    int l = 0, r = n-1;
        while(l<r){

            int mid = l+r>>1;
            if(q[mid]>=x) r=mid ;
            else l = mid +1;

        }
}